We started yesterday (I posted on this earlier) and it went relatively well during the day, but like OP ours is more of EAESY, because getting DS to sleep right after activity time is really tough unless he's totally conked out.
Today, he is miserable when he's awake. Something must be going on. He's slept a total of 1.5 hours since he woke up at 7.
Silver lining-- last night after 5 PM was insane, as well... he was a mess and ended up eating every hour or so... BUT for the first time ever, he slept from 8:30-3:30! 7 hours! Then went back to sleep after a feed until 7 AM!
So, I am not sure what is going on with these daytimes, but ... here we go, I just put him down at 1:25 and he's wailing again. :)